A Company Purchased a Machine on January 1 of the Current

A company purchased a machine on January 1 of the current year for $750,000.Calculate the annual depreciation expense for each year of the machine's life (estimated at 5 years or 20,000 hours,with a salvage value of $75,000)using each of the below-mentioned methods .During the machine's 5-year life its hourly usage was:
3,000; 4,000; 5,000; 5,000; and 3,000 hours.
Double-
Units-of- Declining-
Year Straight-line Production Balance
Year 1 $__________ $___________ $___________
Year 2 __________ ___________ ___________
Year 3 __________ ___________ ___________
Year 4 __________ ___________ ___________
Year 5 __________ ___________ ___________
Total __________ ___________ ___________